Na duba sahihancin saƙon.

The -n at the end is a linking form. Hausa often adds -n or -r when one noun is connected to another in an X of Y relationship.

So:

sahihanci = authenticity / validity
sahihancin saƙon = the authenticity of the message

That final -n helps link sahihanci to the following noun.

Because Hausa commonly puts the main noun first in this kind of construction. Literally, the structure is like:

authenticity-of message

In natural English, that becomes:

the authenticity of the message

So the Hausa order is normal, even though it may feel reversed compared with English.

The base word is saƙo, meaning message. In this sentence it appears as saƙon, which is a common connected or specific form you will often see in Hausa noun phrases.

So for a learner, the key thing to recognize is:

saƙo = message
saƙon = message in this phrase, specifically the message / of the message

You do not always translate that final -n as a separate English word, but it is part of how Hausa builds noun phrases.

No separate word is needed here. Hausa often expresses of-type relationships through the noun form itself, especially with the linking -n/-r pattern.

So English uses:

the authenticity of the message

But Hausa uses a linked noun phrase:

sahihancin saƙon

Not the way English has the. Hausa does not have a single universal article that works exactly like English the. Specificity is often shown by context and sometimes by noun forms such as the final -n/-r you see in phrases like this.

So you often translate Hausa naturally with the in English even when there is no separate standalone Hausa word for it.

Not quite.

Na duba saƙon means I checked/looked at the message.
Na duba sahihancin saƙon means I checked the authenticity/validity of the message.

The longer version is more specific: it is not just about looking at the message, but about verifying whether it is genuine or correct.

The letter ƙ is a special Hausa consonant, different from ordinary k. It is pronounced with a stronger, more forceful sound, often described as ejective.

A rough English-friendly pronunciation of the whole sentence is:

nah DOO-bah sa-hee-HAN-chin sa-KON

That is only approximate. The best way to learn it is by listening to native pronunciation, especially because Hausa also uses tone, which is usually not shown in ordinary writing.

The basic pattern is:

Na + verb + object phrase

So here:

Na = I with completed action
duba = checked
sahihancin saƙon = the authenticity of the message

That makes the whole sentence structurally straightforward once you recognize the noun-linking pattern inside sahihancin saƙon.